Hot Water Motorised Valve

I was having trouble with the motorised valve supplying my hot water.The valve was opening part way and not switching on the pump or boiler.My solution in the past has been to replace the valve at a cost of at least £50.I spotted this valve replacement motor in B&Q at £19.99 and thought it was worth a try for that kind of saving.I then saw this replacement motor in Screwfix at £13.49...and even bigger saving.It took me 5 minutes to swap the motor and it's working a treat